My sister was decorating her porch, and I felt my knee twinge helping her. Wanted to find out about stem cell stuff for pain. Found https://ways2well.com/blog/revolutionizing-knee-pain-treatment-with-stem-cell-therapy-advances  and it’s full of details on that. It dives into stem cell therapy, mentioning quick fixes or longer sessions that might heal joints and cut stiffness, written so I could follow. I enjoyed figuring out my next step from it.